1PetscRegressor Object: 1 MPI process 2 type: linear 3 PetscRegressor Linear Type: ols 4 Intercept=0.0857143 5 Tao Object: (regressor_linear_) 1 MPI process 6 type: brgn 7 Regularizer weight: 0. 8 BRGN Regularization Type: l2prox 9 Tao Object: (tao_brgn_subsolver_) 1 MPI process 10 type: bnls 11 Tao Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process 12 type: bncg 13 CG Type: ssml_bfgs 14 Skipped Stepdirection Updates: 0 15 Scaled gradient steps: 0 16 Pure gradient steps: 0 17 Not a descent direction: 0 18 Line search fails: 0 19 Matrix has not been preallocated yet 20 TaoLineSearch Object: (tao_brgn_subsolver_tao_bnk_cg_) 1 MPI process 21 type: more-thuente 22 maximum function evaluations=30 23 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 24 total number of function evaluations=0 25 total number of gradient evaluations=0 26 total number of function/gradient evaluations=0 27 Termination reason: CONTINUE_ITERATING 28 convergence tolerances: gatol=1e-08, grtol=1e-08, steptol=0., gttol=0. 29 Residual in Function/Gradient:=0. 30 Objective value=0. 31 total number of iterations=0, (max: 2000) 32 Solver never run 33 Rejected BFGS updates: 0 34 CG steps: 0 35 Newton steps: 1 36 BFGS steps: 0 37 Scaled gradient steps: 0 38 Gradient steps: 0 39 KSP termination reasons: 40 atol: 1 41 rtol: 0 42 ctol: 0 43 negc: 0 44 dtol: 0 45 iter: 0 46 othr: 0 47 TaoLineSearch Object: (tao_brgn_subsolver_) 1 MPI process 48 type: more-thuente 49 maximum function evaluations=30 50 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 51 total number of function evaluations=0 52 total number of gradient evaluations=0 53 total number of function/gradient evaluations=1 54 Termination reason: SUCCESS 55 KSP Object: (tao_brgn_subsolver_tao_bnk_) 1 MPI process 56 type: stcg 57 maximum iterations=10000, initial guess is zero 58 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 59 left preconditioning 60 using UNPRECONDITIONED norm type for convergence test 61 PC Object: (tao_brgn_subsolver_tao_bnk_) 1 MPI process 62 type: lmvm 63 Mat Object: (tao_brgn_subsolver_tao_bnk_pc_lmvm_) 1 MPI process 64 type: lmvmbfgs 65 rows=2, cols=2 66 Max. storage: 5 67 Used storage: 0 68 Number of updates: 0 69 Number of rejects: 0 70 Number of resets: 0 71 J0: 72 Mat Object: (tao_brgn_subsolver_tao_bnk_pc_lmvm_mat_lmvm_J0_) 1 MPI process 73 type: diagonal 74 rows=2, cols=2 75 Vec Object: 1 MPI process 76 type: seq 77 Rescale type: diagonal 78 Rescale history: 1 79 Rescale params: alpha=1., beta=0.5, rho=1. 80 Rescale convex factor: theta=0.125 81 linear system matrix, which is also used to construct the preconditioner: 82 Mat Object: 1 MPI process 83 type: shell 84 rows=2, cols=2 85 total KSP iterations: 2 86 convergence tolerances: gatol=1e-08, grtol=1e-08, steptol=0., gttol=0. 87 Residual in Function/Gradient:=2.7894e-16 88 Objective value=0.0571429 89 total number of iterations=1, (max: 10000) 90 total number of function evaluations=3, (max: unlimited) 91 total number of function/gradient evaluations=3, (max: unlimited) 92 total number of Hessian evaluations=1 93 total number of Jacobian evaluations=4 94 Solution converged: ||g(X)|| <= gatol 95 convergence tolerances: gatol=1e-08, grtol=1e-08, steptol=0., gttol=0. 96 Residual in Function/Gradient:=0. 97 Objective value=1.15 98 total number of iterations=1, (max: 10000) 99 total number of function evaluations=3, (max: unlimited) 100 total number of function/gradient evaluations=3, (max: unlimited) 101 total number of Hessian evaluations=1 102 Solution converged: ||g(X)|| <= gatol 103Intercept is 0.085714 104Coefficients are 105Vec Object: 1 MPI process 106 type: seq 1070.4 1081.42857 109Predicted values are 110Vec Object: 1 MPI process 111 type: seq 1121.11429 1130.242857 1140.0857143 1150.642857 1161.91429 117